Table 3.

Markers of placental senescence and oxidative damage within preterm subgroups.

Markers	Very preterm (n = 11) (<32 weeks)	95% CI of mean	Late preterm (n = 22) (32–<37 weeks)	95% CI of mean
Telomere ratio T/S	1.145 ± 0.049	1.113–1.178	1.174 ± 0.089	1.134–1.213
HMGB1 (pg/mg)^	165.57 (132.20–192.66)	137.73–199.14	170.75 (140.03–185.34)	129.69–177.36
8-OHdG (pg/mg)^	0.657 (0.627–0.935)	0.307–2.228	0.808 (0.635–1.089)	0.748–2.656

mean ± SD, independent sample T-test; ^median (interquartile range), Mann–Whitney U test; ^ap value of very preterm vs. term < 0.05; ^bp value of late preterm vs. term < 0.05; ^cp value of very vs. late preterm <0.05.